Question

Which expression represents the approximate length

Answer 1

The expression that represents the approximate length of BC is; A: (3) sin(66)/sin (38)

Trigonometric Ratios

From the given triangle ABC, we see that;

∠A = 66°

∠C = 38°

AB = 3

Thus using sine rule, we have;

AB/sin C = BC/sin A

3/sin 38 = BC/sin 66

BC = (3sin 66)/sin 38

BC = 4.45

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